I've done:
x(dy/dx) = y^2 - 4
dy/(y^2 - 4) = dy/x
But can't figure out how to integrate 1/(y^2 -4). I tried rewriting using difference of two squares and tried splitting using partial fractions. Is there a substitution method I can make?

(Original post by Freerider101)
I've done:
x(dy/dx) = y^2 - 4
dy/(y^2 - 4) = dy/x
But can't figure out how to integrate 1/(y^2 -4). I tried rewriting using difference of two squares and tried splitting using partial fractions. Is there a substitution method I can make?

(Original post by Freerider101)
Ahh sweet good revision of partial fractions I guess. Also I was told that all the integration formulae were for FP2 etc but I guess this isn't the case since this came from a C4 book.

Well, as you discovered, you can do it without reference to the formula book.